April weather forecast
Bissau, Guinea-Bissau

April shifts the weather landscape in Bissau quite a bit. There is a noticeable jump in rainfall to 1mm (0.04") from the near absence of rain in the preceding months. Signs of the upcoming wet season become observable with a subtly more humid climate. The prevailing sea temperature contributes to the increasing humidity levels in the city. The increase in daylight, reaching 12.4 hours, provides ampler opportunities for outdoor activities in the thriving city of Bissau.

Temperature

Bissau's average high-temperature in April is a still hot 33.3°C (91.9°F), marking an insignificant difference from the 33.9°C (93°F) of March. The month of April sees a significant daily temperature drop, recording an average low-temperature of 20.6°C (69.1°F) in Bissau.

Rainfall

In Bissau, during April, the rain falls for 1 days and regularly aggregates up to 1mm (0.04") of precipitation. Throughout the year, in Bissau, there are 86 rainfall days, and 2023mm (79.65") of precipitation is accumulated.

Sea temperature

In Bissau, the average seawater temperature in April is 25.9°C (78.6°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Bissau, the average length of the day in April is 12h and 24min.
On the first day of April in Bissau, sunrise is at 06:58 and sunset at 19:13. On the last day of the month, sunrise is at 06:43 and sunset at 19:16 GMT.

Sunshine

March and April, with an average of 9h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are February through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 12 in April transforms into the following instructions:
Enforce every vital precaution. Those with light skin could endure burns in a matter of minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Enhance your sun protection with tightly woven, yet airy clothing. Applying and reapplying liberally a broad-spectrum sunscreen of SPF 30+ every two hours, and straight after a swim or outdoor activity is recommended. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.